用深共晶溶剂萃取废锂离子电池中有价金属：实验及机理分析

IF 3.5 3区工程技术 Q2 ENGINEERING, CHEMICAL

AIChE Journal Pub Date : 2024-12-24 DOI:10.1002/aic.18714

Yan Zhang, Hai Liu, Ruoyu Hu, Yan Zhou, Shuai Wang, Jianguang Qi, Yinglong Wang, Zhaoyou Zhu, Guoxuan Li

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引用次数: 0

摘要

提出了一种新型磷基疏水深共晶溶剂（hess），用于从废锂离子电池（LIBs）中选择性提取有价金属。在优化的萃取条件下，HDES [TOP][Lid]对Co2+和Ni2+的单级萃取效率分别为98.5%和83.9%，HDES [TBP][Lid]对Co2+和Ni2+的单级萃取效率分别为96.0%和82.9%，且萃取液中富集了Li+。FT-IR， 1H NMR和ESP分析证实了HBD和HBA之间的氢键。基于量子化学（QC）和分子动力学（MD）分析了hdes萃取金属离子的机理。分子水平上的萃取机制是过渡金属离子与hess之间的静电和配位相互作用主导了金属离子（Co2+和Ni2+）的萃取。与hess的相互作用强度大于Li+与hess的相互作用强度。

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Extraction of valuable metals from waste Li-ion batteries by deep eutectic solvent: Experimental and mechanism analysis

A novel phospho-based hydrophobic deep eutectic solvents (HDESs) is proposed to selectively extract valuable metals from waste lithium-ion batteries (LIBs). Under the optimized extraction conditions, the single-stage extraction efficiency of HDES [TOP][Lid] for Co²⁺ and Ni²⁺ were 98.5% and 83.9%, and HDES [TBP][Lid] for Co²⁺ and Ni²⁺ were 96.0% and 82.9%, and Li⁺ was enriched in the extract. FT-IR, ¹H NMR, and ESP analysis confirmed the hydrogen bond between HBD and HBA. The metal ion extraction mechanism by HDESs was analyzed based on quantum chemistry (QC) and molecular dynamics (MD). The extraction mechanism at the molecular level is that electrostatic and coordination interactions between transition metal ions and HDESs dominate the extraction of metal ions (Co²⁺ and Ni²⁺). The interaction intensity with HDESs was stronger than that between Li⁺ and HDESs.

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来源期刊

AIChE Journal 工程技术-工程：化工

CiteScore

7.10

自引率

10.80%

发文量

411

审稿时长

3.6 months

期刊介绍： The AIChE Journal is the premier research monthly in chemical engineering and related fields. This peer-reviewed and broad-based journal reports on the most important and latest technological advances in core areas of chemical engineering as well as in other relevant engineering disciplines. To keep abreast with the progressive outlook of the profession, the Journal has been expanding the scope of its editorial contents to include such fast developing areas as biotechnology, electrochemical engineering, and environmental engineering. The AIChE Journal is indeed the global communications vehicle for the world-renowned researchers to exchange top-notch research findings with one another. Subscribing to the AIChE Journal is like having immediate access to nine topical journals in the field. Articles are categorized according to the following topical areas: Biomolecular Engineering, Bioengineering, Biochemicals, Biofuels, and Food Inorganic Materials: Synthesis and Processing Particle Technology and Fluidization Process Systems Engineering Reaction Engineering, Kinetics and Catalysis Separations: Materials, Devices and Processes Soft Materials: Synthesis, Processing and Products Thermodynamics and Molecular-Scale Phenomena Transport Phenomena and Fluid Mechanics.